Single flanked twin sheep have no chorion between two amniotic cavities, one placenta, and two children of the same gender, commonly known as monozygotic twins. The risk of giving birth to twins is still greater than that of having a single child, so can a single wool twin sheep be born naturally?
Single wool twin sheep can give birth naturally, provided that the fetus can develop normally in the uterine cavity and the mother's placenta is also normal. Therefore, in such a situation, women can undergo vaginal trials, and when uterine contractions are normal, the problem of vaginal delivery is not significant. However, in cases of uterine atony or difficult delivery for pregnant women, timely cesarean section should be performed to ensure the safety of both mother and child, and to facilitate the smooth delivery of the baby.
The risk of having twins is already relatively high, and women at this time belong to high-risk pregnancy phenomena. A twin pregnancy formed by the division of a fertilized egg becomes a monozygotic twin. Due to the different time of division of the fertilized egg during early development, four types are formed, namely, double sheep membranous sac double chorionic monozygotic twin, double sheep membranous sac single chorionic monozygotic twin, single hair follicle single chorionic monozygotic twin, and conjoined twins.
Among them, twin sheep with a single chorionic sac and monozygotic twin is due to the division of the fertilized egg 4 to 8 days after fertilization, and the embryo development is in the blastocyst stage, which has differentiated into nourishing cells, but the amniotic sac has not yet formed. So a placenta is formed, with only two layers of amniotic membrane separating the two amniotic sacs. This type is called a double amniotic sac, single chorionic, monozygotic twin.
